http://e1.i.lencr.org/: CN=E1,O=Let's Encrypt,C=US

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CA Certificate Basic Information

This certificate is intermediate certificate used for the issuance of other certificates.

  • Certificate download URL: http://e1.i.lencr.org/ (DER format)
  • Serial number: 238917698029532949600116015593252145733
  • SHA-1 Fingerprint: 091e8ea1b256a312962af6c140c0fbf079a407b3
  • SHA-1 Fingerprint: 09:1e:8e:a1:b2:56:a3:12:96:2a:f6:c1:40:c0:fb:f0:79:a4:07:b3
  • SHA-256 Fingerprint: 46494e30379059df18be52124305e606fc59070e5b21076ce113954b60517cda
  • SHA-256 Fingerprint: 46:49:4e:30:37:90:59:df:18:be:52:12:43:05:e6:06:fc:59:07:0e:5b:21:07:6c:e1:13:95:4b:60:51:7c:da
  • Signature hash algorithm: sha384
  • Subject: CN=E1,O=Let’s Encrypt,C=US
  • Not valid before: 2020-09-04 00:00:00
  • Not valid after: 2025-09-15 16:00:00
  • Issuer:
    • Issuer name: CN=ISRG Root X2,O=Internet Security Research Group,C=US
    • Issuer certificate URL: http://x2.i.lencr.org/

Download certificate through curl:

curl -sSL http://e1.i.lencr.org/ --output cert.crt

Download certificate through wget:

wget -q http://e1.i.lencr.org/ --output-document=cert.crt

CA Certificate Detail Information

Use openssl x509 to decode certificate to get detail information:

openssl x509 -in cert.crt -inform der -text -noout

Decoded detail certificate information:

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            b3:bd:df:f8:a7:84:5b:bc:e9:03:a0:41:35:b3:4a:45
    Signature Algorithm: ecdsa-with-SHA384
        Issuer: C=US, O=Internet Security Research Group, CN=ISRG Root X2
        Validity
            Not Before: Sep  4 00:00:00 2020 GMT
            Not After : Sep 15 16:00:00 2025 GMT
        Subject: C=US, O=Let's Encrypt, CN=E1
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (384 bit)
                pub: 
                    04:24:5c:2d:a2:2a:fd:1c:4b:a6:5d:97:73:27:31:
                    ac:b2:a0:69:62:ef:65:e8:a6:b0:f0:ac:4b:9f:ff:
                    1c:0b:70:0f:d3:98:2f:4d:fc:0f:00:9b:37:f0:74:
                    05:57:32:97:2e:05:ef:2a:43:25:a3:fb:6e:34:27:
                    13:f6:4f:7e:69:d3:02:99:5e:eb:24:47:92:c1:24:
                    9b:e6:b1:21:8f:c1:24:81:fc:68:cc:1f:69:ba:58:
                    f5:19:22:f7:74:c6:16
                ASN1 OID: secp384r1
                NIST CURVE: P-384
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature, Certificate Sign, CRL Sign
            X509v3 Extended Key Usage: 
                TLS Web Client Authentication, TLS Web Server Authentication
            X509v3 Basic Constraints: critical
                CA:TRUE, pathlen:0
            X509v3 Subject Key Identifier: 
                5A:F3:ED:2B:FC:36:C2:37:79:B9:52:30:EA:54:6F:CF:55:CB:2E:AC
            X509v3 Authority Key Identifier: 
                keyid:7C:42:96:AE:DE:4B:48:3B:FA:92:F8:9E:8C:CF:6D:8B:A9:72:37:95

            Authority Information Access: 
                CA Issuers - URI:http://x2.i.lencr.org/

            X509v3 CRL Distribution Points: 

                Full Name:
                  URI:http://x2.c.lencr.org/

            X509v3 Certificate Policies: 
                Policy: 2.23.140.1.2.1
                Policy: 1.3.6.1.4.1.44947.1.1.1

    Signature Algorithm: ecdsa-with-SHA384
         30:64:02:30:7b:74:d5:52:13:8d:61:fe:0d:ba:3f:03:00:9d:
         f3:d7:98:84:d9:57:2e:bd:e9:0f:9c:5c:48:04:21:f2:cb:b3:
         60:72:8e:97:d6:12:4f:ca:44:f6:42:c9:d3:7b:86:a9:02:30:
         5a:b1:b1:b4:ed:ea:60:99:20:b1:38:03:ca:3d:a0:26:b8:ee:
         6e:2d:4a:f6:c6:66:1f:33:9a:db:92:4a:d5:f5:29:13:c6:70:
         62:28:ba:23:8c:cf:3d:2f:cb:82:e9:7f

CA Certificate in PEM Format

Use openssl x509 to convert certificate from DER format to PEM format:

openssl x509 -in cert.crt -inform der

Converted PEM format certificate:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Download PEM Certificate

Also see Top 1 Millions Domains CA Certificate List


Page version: a651bdd 2022-03-26